Conventional electronic transport methods have been tremendously powerful in exploring systems with low lying charge excitations. In recent years there is growing interest in similar transport properties but of the spin degree of freedom, however, an analogous set of tools for spin transport currently does not exist. A grand challenge is therefore to develop spin analogues to voltage and current sources and meters which will allow us to explore both stationary and transient spin transport phenomena in a broad range of quantum materials. In this talk I will report on some of our efforts to develop such measurement capabilities using NV centers in diamond. Specifically I will report on recent measurements we have performed that explore magnetic textures in thin magnetic films and the spin chemical potential in magnetic insulators.